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US 5,968,220 AGranted
Process for modulated cryogenic quenching of glass sheets
AssigneeGlasstech, Inc.
InventorsRonald A. McMaster, Kenneth R. Kormanyos
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Abstract
A process and apparatus (26) for quenching a heated glass sheet by directing modulated cryogenic flows (36) that is initially completely liquid (42) toward the oppositely facing surfaces (38) of the glass sheet to quench the glass sheet. The modulated cryogenic flows (36) can be started and fully stopped to provide flow pulses and can also be continuous and have periodic increased flow pulses.
Claims2
A process for quenching a glass sheet having oppositely facing surfaces, comprising:
- directing modulated cryogenic flows that are initially completely liquid toward the oppositely facing surfaces of the glass sheet to quench the glass sheet;
- and
- wherein the cryogenic flows are started and fully stopped to provide flow pulses.
A process for quenching a glass sheet having oppositely facing surfaces, comprising:
- directing modulated cryogenic flows that are initially completely liquid toward the oppositely facing surfaces of the glass sheet to quench the glass sheet;
- and
- wherein the cryogenic flows are continuous and have periodic increased flow pulses.
Dependencies are inferred from the claim text.